Hannah, Marnie, Jessa and Shoshanna are trying to figure life out. They’ve been living in New York for a couple of years, but they’re still not sure what they want – from boys, from each other, from themselves. And things aren’t getting any clearer. Created by and starring Lena Dunham (“Tiny Furniture”), the new HBO series “Girls” takes a comic look at the assorted humiliations and rare triumphs of a group of girls in their early 20s.